ES2958062T3 - Procedure, apparatus and data transmission system for direct communication and device - Google Patents

Abstract

The present invention relates to the field of communications and relates to a method, apparatus and data transmission system for direct communication and to a device. The method comprises: when it is necessary to send direct Hybrid Automatic Repeat Request (HARQ) feedback information and uplink information in a target time unit, and the direct HARQ feedback information and uplink information satisfy a ratio of predetermined timing, a first terminal sends the HARQ forward feedback information and the uplink information satisfying a predetermined timing relationship. HARQ feedback information and uplink information to an access network device on the same physical layer uplink channel in the target time unit. According to the present invention, in the manner described above, when the direct HARQ feedback information and the uplink information need to be sent in the target time unit, the direct HARQ feedback information and the uplink information satisfy at least the relationship predetermined timing to ensure that the first terminal can process the uplink multiplexing transmission on time. The success rate of transmitting and receiving information in a direct communication scenario is fully guaranteed. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Procedure, apparatus and data transmission system for direct communication and device

Technical field

The present disclosure relates to a field of communication technologies and, more particularly, to a data transmission method for direct communication, an apparatus and a device and a system.

Background of the invention

In Vehicle to All (V2X) technologies, on-board devices and other devices (such as other vehicle-mounted devices, roadside infrastructure, etc.) can perform direct communication over side links. Direct communication has characteristics of short delay and low overhead.

In related technologies, a direct communication method based on programming of access network devices includes: sending, by an access network device, programming information to the user equipment at a transmission end of the direct communication (also called the first terminal) through the downlink control information (DCI), sending, by the first terminal, direct data to the user equipment at a receiving end of the direct communication (also called the second terminal) according to the access network device programming information and through the side link.

Since the terminals based on the programming of access network devices can have uplink-downlink services and direct communication services at the same time, in the same time unit, the hybrid automatic repeat request feedback transmission Direct transmission (HARQ) can overlap with the transmission of other uplink data in the time domain, causing a resource conflict problem. There is currently no suitable solution.

WO 2017/026970A1 discloses procedures and apparatus to enable high data rate relay operation using the D2D air interface that includes a User Equipment (UE) for transmitting and receiving data over a sidelink interface under the control of an Evolved Node B (eNB), the LTE comprising: receiving circuits for receiving a reference signal on a sidelink interface; control circuits for determining one or more lateral link quality indicators based on the received reference signal; and transmission circuits to transmit the determined lateral link quality indicators to the eNB.

Summary

The present disclosure provides a data transmission method for direct communication, an apparatus and a device and a system.

According to a first aspect of the present invention, a data transmission method according to claim 1 is provided.

Optionally, the uplink information includes at least one of SR scheduling request, ACK/NACK feedback response information, CSI channel status information, CQI channel quality indicator and uplink service data.

According to the invention, the predetermined timing relationship includes:

a first time point is earlier than a second time point, and an absolute value of a difference between the first time point and the second time point is greater than a predetermined processing time duration;

wherein, the first time point is a completion time point of transmission of the direct HARQ feedback information on a PSFCH direct feedback channel, and the second time point is a start time point of transmission of the uplink information in the uplink channel of the physical layer.

Optionally, the default processing time duration includes:

a first fixed constant; either

a duration of time predefined by a communication protocol; either,

a duration of time preconfigured by the access network device.

Optionally, the procedure also includes:

receiving downlink control information DCI sent by the access network device and configured to schedule transmission of the forward data, wherein the DCI is configured to indicate a start time point of transmission of the HARQ feedback information direct, and the start time point of transmission of the direct HARQ feedback information is a time point at which the second terminal begins to send the direct HARQ feedback information to the first terminal;

obtain a predetermined transmission time duration of the direct HARQ feedback information; and

determine the first time point according to the transmission start time point of the direct HARQ feedback information and the predetermined transmission time duration.

Optionally, the procedure also includes:

receiving downlink control information DCI sent by the access network device and configured to schedule the transmission of the direct data, wherein the DCI is configured to indicate a completion time point of the transmission of the direct data, and the completion time point of transmission of the direct data is a time point at which the second terminal receives the direct data sent by the first terminal;

obtaining a predetermined time interval between the transmission of the direct data and the transmission of the direct HARQ feedback information corresponding to the direct data; and

determine the first time point according to the end time point of the direct data transmission and the predetermined time interval.

Optionally, the default time range includes:

a second fixed constant; either

a time interval predefined by a communication protocol; either,

a time interval preconfigured by the access network device.

Optionally, the default time range includes:

a maximum time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data.

Optionally, the procedure includes:

informing, by the first terminal, the predetermined time interval to the access network device; or receiving, by the first terminal, the downlink signaling sent by the access network device, and forwarding the predetermined time slot to the access network device in accordance with the downlink signaling.

According to a second aspect of the present invention, a data transmission method for direct communication according to claim 5 is provided.

Optionally, the uplink information includes at least one of SR scheduling request, ACK/NACK feedback response information, CSI channel status information, CQI channel quality indicator and uplink service data.

According to the invention, the predetermined timing relationship includes:

a first time point is earlier than a second time point, and an absolute value of a difference between the first time point and the second time point is greater than a predetermined processing time duration;

wherein, the first time point is a completion time point of transmission of the direct HARQ feedback information on a PSFCH direct feedback channel, and the second time point is a start time point of transmission of the uplink information in the uplink channel of the physical layer.

Optionally, the default processing time duration includes:

a first fixed constant; either

a duration of time predefined by a communication protocol; either,

a duration of time preconfigured by the access network device.

Optionally, the procedure also includes:

sending downlink control information DCI to schedule transmission of the direct data to the first terminal, wherein the DCI is configured to indicate a start time point of transmission of the direct HARQ feedback information, and the time point start of transmission of the direct HARQ feedback information is a time point at which the second terminal begins to send the direct HARQ feedback information to the first terminal;

obtain a predetermined transmission time duration of the direct HARQ feedback information; and

determine the first time point according to the transmission start time point of the direct HARQ feedback information and the predetermined transmission time duration.

Optionally, the procedure also includes:

sending, by the access network device, downlink control information DCI to schedule the transmission of the direct data to the first terminal, wherein the DCI is configured to indicate a time point of completion of the transmission of the data direct data, and the completion time point of transmission of the direct data is a time point at which the second terminal receives the direct data sent by the first terminal;

obtaining a predetermined time interval between the transmission of the direct data and the transmission of the direct HARQ feedback information corresponding to the direct data; and

determine the first time point according to the end time point of the direct data transmission and the predetermined time interval.

Optionally, the default time range includes:

a second fixed constant; either

a time interval predefined by a communication protocol; either

a time interval preconfigured by the access network device.

Optionally, the default time range includes:

a maximum time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data.

Optionally, the procedure also includes:

receiving the predetermined time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data; either

sending downlink signaling to the first terminal, the downlink signaling is configured to indicate the predetermined time slot returned by the first terminal to the access network device, and receive the predetermined time slot returned by the first terminal.

According to a third aspect of the present invention there is provided a terminal according to claim 9.

According to a fourth aspect of the present invention, an access network device according to claim 10 is provided.

According to a fifth aspect of the present invention, a computer readable storage medium is provided with at least one instruction, at least one program, a set of codes or a set of instructions stored therein. The at least one instruction, the at least one program, the code set or the instruction set is loaded or executed by a processor to implement the data transmission procedure for direct communication according to the first aspect or any of the possible implementations of the first aspect, or implements the data transmission procedure for direct communication according to the second aspect or any of the possible implementations of the second aspect.

Technical solutions provided by embodiments of the present disclosure may include the following beneficial effects.

When the direct HARQ feedback information and the uplink information are to be sent within the target time unit, the direct HARQ feedback information and the uplink information at least satisfy the predetermined timing relationship to ensure that the first terminal is capable of processing the uplink multiplexing transmission timely, that is, the first terminal can use the same uplink channel of the physical layer within the target time unit to report. Therefore, the problem of resource conflicts caused by the overlap of direct HARQ feedback and other time domain uplink data transmissions in related technologies, a success rate of receiving and sending information in a Direct communication scenario is fully guaranteed, and it is beneficial to improve the efficiency of data transmission.

It should be noted that the details above and in the following text are exemplary and illustrative and do not constitute a limitation of the present disclosure.

Brief description of the figures

The figures herein are incorporated into the specification and constitute a part of the specification, show embodiments in accordance with embodiments of the present disclosure and explain the principle of the present disclosure together with the specification.

Figure 1 is a schematic diagram of a network architecture possibly applicable for embodiments of the present disclosure.

Figure 2 is a flow chart illustrating a data transmission procedure for direct communication according to an illustrative embodiment.

Figure 3 is a schematic diagram illustrating a data transmission situation involved in a data transmission procedure for direct communication according to another illustrative embodiment. Figure 4 is a flow chart illustrating a data transmission procedure for direct communication according to another illustrative embodiment.

Figure 5 is a flow chart illustrating a data transmission procedure for direct communication according to another illustrative embodiment.

Figure 6 is a schematic diagram illustrating a data transmission situation involved in a data transmission procedure for direct communication according to another illustrative embodiment. Figure 7 is a schematic diagram illustrating a data transmission situation involved in a data transmission procedure for direct communication according to another illustrative embodiment. Figure 8 is a block diagram illustrating a data transmission apparatus for direct communication according to an illustrative embodiment.

Figure 9 is a block diagram illustrating a data transmission apparatus for direct communication according to another illustrative embodiment.

Figure 10 is a block diagram illustrating a terminal according to an illustrative embodiment.

Figure 11 is a block diagram illustrating an access network device according to an illustrative embodiment.

The most relevant figures that disclose embodiments of the method of the invention are Figure 2, Figure 6 and Figure 7. Other figures are useful to understand the invention.

Detailed description

Exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. Where the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following illustrative embodiments do not represent all implementations consistent with the present invention. Instead, these are simply examples of apparatus and methods consistent with some aspects of the present invention as detailed in the appended claims.

The network architectures and service scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and are not a limitation of the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art will know that the technical solutions provided in the embodiments of the present disclosure are equally applicable to similar technical problems with evolutions of network architectures and emergence of new service scenarios.

Figure 1 is a schematic diagram of a network architecture possibly applicable for embodiments of the present disclosure. The network architecture may be a network architecture of a C-V2X system. C stands for cellular, and the C-V2X system is an onboard radio communication system formed based on evolutions of cellular network communication systems such as 3G, 4G or 5G. The network architecture may include: a core network 11, an access network 12, a terminal 13 and a vehicle 14.

The core network 11 includes several core network devices. The function of the core network device is mainly to provide user connections, manage users, and complete service bearers, such as a bearer network to provide an interface to an external network. For example, the core network of a long-term evolution (LTE) system may include a Mobility Management Entity (MME), a Serving Gateway (S-GW), a PDN Gateway (P-GW ) and other devices. The core network of a 5G NR system may include Access and Mobility Management Function (AMF) entities, User Plane Function (UPF) entities, and Session Management Function (SMF) entities, and other devices.

The access network 12 includes several access network devices 120. The access network device 120 and the core network device 110 communicate with each other through a certain interface technology, such as an S1 interface in the LTE system. and an NG interface in the NR 5G system. The access network device 120 may be a base station (BS), which is a device arranged in the access network and configured to provide a radio communication function for a terminal. The base station may include various forms of macro base stations, micro base stations, repeater stations, access points, etc. In systems using different radio access technologies, the names of devices with base station function may be different. For example, in the LTE system, the device with the base station function is called eNodeB or eNB; in N<r>5<g> systems, the device with the base station function is called gNodeB or gNB. The name "base station" may change with the evolution of communication technologies. For ease of description, in the embodiments of the present disclosure, the above-mentioned devices that provide a radio communication function for terminals are collectively called access network device.

The terminal 13 may include various portable devices, on-board devices, disposable devices, computing devices or other processing devices connected to radio modems, which have the function of radio communication, as well as various forms of User Equipment (UE), Mobile Stations (MS), terminal devices, etc. For ease of description, the devices mentioned above are collectively called terminal. The access network device 120 and the terminal 13 communicate with each other through a certain air interface technology, such as a Uu interface.

The vehicle 14 may be an automated driving vehicle or it may also be a non-automated driving vehicle. The vehicle 14 is provided with an on-board device and implements communication with other vehicles, the terminal 13 or other devices, such as a road side unit (RSU), through the on-board device. The onboard device may also be called onboard terminal, onboard communication device or other names, which will not be limited in the embodiments of the present disclosure. The on-board device may be a device integrated into a Telematics Box (T-BOX), or it may be a device separate from the vehicle body. Furthermore, the onboard device may be installed in the vehicle 14 before the vehicle 14 leaves the factory, or it may be installed in the vehicle 14 after the vehicle 14 leaves the factory.

The vehicle onboard device 14 may communicate with other devices (such as other onboard devices, terminal 13, RSU, etc.) with each other through a direct communication interface (such as a PC5 interface). Consequently, a communication link established based on the direct communication interface can be called a direct link or a lateral link. In addition, the in-vehicle device 14 and other devices can also be transmitted through the access network 12 and the core network 11, that is, the communication link between the terminal 13 and the access network device 120 in a Original cellular network is used for communication. Compared with communication based on Uu interface, communication based on direct communication interface has characteristics of short delay and low overhead, and is suitable for communication between embedded devices and other peripheral devices that have close geographical positions.

The aforementioned network architecture illustrated in Figure 1 can implement a V2X service scenario. The above-mentioned network architecture may also include devices such as an RSU, a V2X application server, and a V2X control function entity, which will not be limited to the embodiments of the present disclosure. Furthermore, the technical solutions described in embodiments of the present disclosure may be applicable to the 5G NR system, and may also be applicable to a further evolution system of the 5G NR system.

In embodiments of the present disclosure, for the direct communication scenario in the V2X service scenario mentioned above, a data transmission procedure for direct communication is provided to solve a resource conflict problem.

In embodiments of the present disclosure, a first terminal and a second terminal are devices at both ends of the direct communication in the V2X service scenario. The side link can be established between the first terminal and the second terminal through a direct communication interface (such as a PC5 interface), and then interactions between user plane data and control plane signaling can be established. done through the lateral link. For example, the first terminal may be the on-board device of the vehicle 14 in the network architecture illustrated in Figure 1, and the second terminal may be the on-board device of other vehicles, or it may also be the terminal 13 or the RSU. or similar. For another example, the first terminal may be the terminal 13 in the network architecture illustrated in Figure 1, and the second terminal may be other terminals, and may also be the vehicle onboard device 14 or the RSU or the like. In some embodiments, the same device (e.g., the same onboard device or the same terminal) may serve as the first terminal in some scenarios, and may also serve as the second terminal in other scenarios.

In embodiments of the present disclosure, the first terminal is also called a user equipment at a transmitting end of the direct communication, and the second terminal is also called a user equipment at a receiving end of the direct communication.

Next, the technical solution of the present disclosure will be presented and explained through several illustrative embodiments.

Figure 2 is a flow chart illustrating a data transmission procedure for direct communication according to an illustrative embodiment. The procedure can be applied to the network architecture illustrated in Figure 1 and can include the following blocks.

At block 201, an access network device sends DCI to the first terminal. The DCI carries data transmission parameters inside.

Optionally, the access network device sends the DCI to the first terminal through a downlink channel. The DCI is a DCI configured to schedule direct data transmission.

As an example, the downlink channel includes a physical downlink control channel (PDCCH).

Optionally, the data transmission parameter is configured to indicate a time-frequency resource and/or a modulation and coding scheme.

In block 202, the first terminal sends the direct data to the second terminal through a direct link according to the data transmission parameter.

Optionally, the first terminal receives the DCI sent by the access network device through the downlink channel, and sends the direct data to the second terminal, according to the time-frequency resource and/or the modulation and coding scheme. indicated by the data transmission parameter in the DCI, over the direct link.

Direct data is physical layer data sent by the first terminal to the second terminal through the direct link.

The first terminal sends the direct data to the second terminal using a target time-frequency resource of the direct link.

Optionally, the target time-frequency resource is a predefined or preconfigured time-frequency resource.

Optionally, the first terminal may also send control information to the second terminal before or at the same time as the direct data is sent, and the control information is configured to indicate information related to receiving data from the physical layer.

Optionally, the reception-related information includes: a time domain position and/or a frequency domain position of the target time-frequency resource configured to support the physical layer data. In some embodiments, the reception-related information further includes a modulation and coding scheme (MCS) of the physical layer data, a hybrid R<q>process number (HARQ-ID), and a status indicator. new data (NDI) and other information.

At block 203, the second terminal feeds direct HARQ feedback information to the first terminal.

Consequently, the second terminal receives the direct data sent by the first terminal. Optionally, the second terminal receives the direct data sent by the first terminal using the target time-frequency resource of the direct link.

The second terminal feeds back the direct HARQ feedback information to the first terminal, and the direct HARQ feedback information includes HARQ feedback bits corresponding to at least one time of the direct data transmission.

For example, the number of HARQ feedback bits corresponding to a direct data transmission is 1 bit or 2 bits.

The forward HARQ feedback information is configured to indicate a reception status corresponding to the forward data. The receiving state corresponding to direct data includes an acknowledgment state (ACK) or a negative acknowledgment state (NACK).

ACK is configured to indicate that the forward data is correctly received by the second terminal.

NACK includes a non-received state and/or an incorrectly received state. The not received state is set to indicate that the second terminal does not receive the direct data; The incorrectly received state is set to indicate that although the direct data is received by the second terminal, the direct data received by the second terminal is different from the direct data sent by the first terminal, that is, incorrect direct data is received.

After receiving the direct data, the second terminal processes the received direct data. For example, the second terminal performs processing such as demodulation or decoding of the direct data. During processing, the second terminal will determine the receiving status of the direct data.

Optionally, the second terminal sends the direct HARQ feedback information to the first terminal through a direct channel. For example, the forward channel is a physical sidelink feedback channel (PSFCH).

At block 204, the first terminal receives the direct HARQ feedback information returned by the second terminal.

Accordingly, the first terminal receives the direct HARQ feedback information sent by the second terminal through the PSFCH.

It should be noted that the direct communication scheme between the first terminal and the second terminal in the embodiment of the present disclosure is a direct communication scheme based on the programming of the access network device. That is, the first terminal sends data based on the programming of the access network device. For the direct communication scheme based on access network scheduling, since the scheduling is performed by the device side of the access network, the direct HARQ feedback information corresponding to the direct data must be transmitted from the second terminal back to the access network device to facilitate retransmission of programming data from the network device side or sending new data. Considering that the first terminal may be in an access network device overlay range that is different from the access network device overlay range of the second terminal, or outside the network overlay, the direct HARQ feedback information should transmitted from the second terminal to the first terminal first, and then informs the access network device through the first terminal.

In block 205, when the direct HARQ feedback information and the uplink information are to be sent within a target time unit, and the direct HARQ feedback information and the uplink information satisfy a predetermined timing relationship, A first terminal sends the direct HARQ feedback information and the uplink information to the access network device on the same uplink channel of the physical layer within the target time unit.

It should be noted that the first terminal receives the direct HARQ feedback information sent by the second terminal, and before the first terminal reports the direct HARQ feedback information to the access network device, the first terminal requires processing the HARQ feedback information. direct. The first terminal processing procedure will take some time. When direct HARQ feedback information and uplink information are to be sent within the target time unit, in response to some uplink information having been transmitted in a process in which the first terminal processes the HARQ feedback directly or transmitted to the access network device, the first terminal cannot multiplex the uplink information with the direct HARQ feedback to report together, or the first terminal requires exiting the existing transmission process to perform multiplexing again, which will greatly increase the complexity of the chips. Therefore, when the direct HARQ feedback information and the uplink information are to be sent within the target time unit, the direct HARQ feedback information and the uplink information at least satisfy the predetermined timing relationship for ensure that the first terminal is capable of processing the timely simultaneous uplink transmission.

The forward HARQ feedback information is configured to indicate the receiving state corresponding to the forward data, and the forward data is physical layer data sent by the first terminal to the second terminal through the forward link.

Optionally, the uplink information includes Uplink Control Information (UCI) and/or uplink service data sent by the first terminal to the access network device.

The UCI includes at least one of the following information:

Scheduling Request (SR);

Feedback response information: Acknowledgment (ACK) or Negative Acknowledgment (NACK); Channel State Information (CSI);

Channel Quality Indicator (CQI).

The default timing relationship is a preconfigured or predefined timing relationship between the forward HARQ feedback information and the uplink information.

Optionally, the target time unit is called the corresponding time unit when the terminal device requires to send uplink HARQ feedback bits and direct HARQ feedback information. For example, the target time unit is symbols a, symbol groups b, slots c or subframes d, a, b, c, d are positive integers, which are not limited in this embodiment.

Optionally, the first terminal receives configuration information sent by the access network device and determines a physical resource of the same uplink channel of the physical layer within the target time unit according to the configuration information.

Optionally, the physical layer uplink channel is an uplink channel configured to send the uplink HARQ feedback bits to the access network device.

Optionally, the physical layer uplink channel is an uplink channel based on a first communication protocol or a second communication protocol. The first communication protocol includes an LTE protocol and the second communication protocol includes an NR protocol.

Optionally, the physical layer uplink channel is PUCCH. For example, a PUCCH channel format is any of PUCCH format 1, PUCCH format 1a, PUCCH format 1b, PUCCH format 2, PUCCH format 2a, PUCCH format 2b, PUCCH format 3, PUCCH format 4 and PUCCH format 5.

The first terminal sends the direct HARQ feedback information and uplink information to the access network device on the physical resource of the same uplink channel of the physical layer within the target time unit.

At block 206, the access network device receives the direct HARQ feedback information and the uplink information sent by the first terminal on the same uplink channel of the physical layer within the target time unit.

Consequently, when the direct HARQ feedback information and the uplink information are to be sent within the target time unit, and the direct HARQ feedback information and the uplink information satisfy the predetermined timing relationship, the device The access network receives the direct HARQ feedback information and the uplink information sent by the first terminal on the same PUCCH within the target time unit.

It should be noted that, in the embodiment of the present disclosure, the access network device requires to perform the same timing determination as the first terminal, that is, determining whether the direct HARQ feedback information and the uplink information satisfy the relationship default timing. The timing determination process of the access network device may analogously refer to related details of the timing determination process of the first terminal, which will not be repeated here.

In summary, in this embodiment, when the direct HARQ feedback information and the uplink information are to be sent within the target time unit, the direct HARQ feedback information and the uplink information at least satisfy the ratio of predetermined timing to ensure that the first terminal is able to process the uplink multiplexing transmission timely, that is, the first terminal can use the same physical layer uplink channel within the target time unit to report. Therefore, the problem of resource conflicts caused by the overlap of direct HARQ feedback and other time domain uplink data transmissions in related technologies, a success rate of receiving and sending information in a Direct communication scenario is fully guaranteed, and it is beneficial to improve the efficiency of data transmission.

Optionally, performing uplink multiplexing transmission of the forward HARQ feedback information and the uplink information satisfies at least the predetermined timing ratio. The predetermined timing relationship includes a first time point being earlier than a second time point, and an absolute value of a difference between the first time point and the second time point being greater than a predetermined processing time duration. .

The first time point is a completion time point of the transmission of the direct HARQ feedback information on a PSFCH, and the second time point is a start time point of the transmission of the uplink information on the PSFCH. physical layer uplink channel.

Optionally, the first time point is an end time point of the direct HARQ feedback information that is transmitted on the PSFCH, that is, the time point at which the first terminal receives the direct HARQ feedback information sent by the second terminal.

Optionally, the second time point is the start time point of the transmission of uplink information on the uplink channel of the physical layer, that is, the time point at which the first terminal starts sending the uplink information to the access network device.

Optionally, the default processing time duration includes:

a first fixed constant; either

a duration of time predefined by a communication protocol; either

a duration of time preconfigured by the access network device.

For example, the default processing time duration is a fixed time duration predefined by the communication protocol, for example, the default processing time duration is a duration of one symbol in the Frequency Division Multiplexing time domain. orthogonal (OFDM), or the default processing time duration is a length of one symbol in the OFDM time domain under a condition of having a subcarrier wave spacing of 15 KHz.

In an illustrative example, as illustrated in Figure 3, the first terminal receives the DCI sent by the access network device and is configured to schedule the transmission of the direct data, and performs the direct data transmission to the second terminal. according to the data transmission parameter in the DCI. The first terminal receives the direct HARQ feedback information transmitted by the second terminal through the PSFCH. The first terminal determines that the first time point is T0 and the default processing time duration is D0. When the first terminal requires to send the direct HARQ feedback information and the uplink information whose transmission start time is after T0+D0, both within the target time unit, the first terminal sends the direct HARQ feedback information and the uplink information to the access network device on the same physical layer uplink channel within the target time unit.

Optionally, block 205 includes the following blocks. The first terminal determines the first time point, and when the direct HARQ feedback information and uplink information should be sent within the target time unit, and the first time point is earlier than the transmission start time point of the uplink information and an absolute value of a difference between the transmission end time point and the transmission start time point is greater than the predetermined processing time duration, the first terminal sends the information Direct HARQ feedback and uplink information to the access network device on the same physical layer uplink channel within the target time unit.

The procedures for the first terminal to determine the first time point include, but are not limited to, the following possible implementations.

In a possible implementation, as illustrated in Figure 4, the procedure includes, but is not limited to, the following blocks.

At block 401, the access network device sends the DCI to schedule transmission of the direct data to the first terminal. The DCI is configured to indicate a start time point of transmission of the direct HARQ feedback information.

The start time point of transmission of the direct HARQ feedback information is a time point at which the second terminal begins to send the direct HARQ feedback information to the first terminal.

Optionally, the start time point of transmission of the direct HARQ feedback information is a start time point when the direct HARQ feedback information is transmitted on the PSFCH.

At block 402, the first terminal receives the DCI sent by the access network device and is configured to schedule transmission of the direct data.

Optionally, the first terminal receives the DCI sent by the access network device. The DCI is configured to indicate the start time point of transmission of the direct HARQ feedback information.

At block 403, the first terminal obtains a predetermined transmission time of the direct HARQ feedback information.

The first terminal obtains the default transmission time duration of the direct HARQ feedback information.

Optionally, the default transmission time duration is a predefined or preconfigured time duration of the direct HARQ feedback information that is transmitted on the PSFCH.

In block 404, the first terminal determines the first time point according to the transmission start time point of the direct HARQ feedback information and the predetermined transmission time duration.

Optionally, the first terminal determines the first time point by adding the transmission start time point of the direct HARQ feedback information and the predetermined transmission time duration. The first time point is the completion time point of the transmission of the direct HARQ feedback information on the PSFCH.

The access network device requires to perform the same timing determination as the first terminal, that is, the access network device sends the DCI to schedule the transmission of the direct data to the first terminal, and the DCI is configured to indicate the start time point of transmission of direct HARQ feedback information. And then the access network device obtains the predetermined transmission time duration of the direct HARQ feedback information, and determines the first time point according to the transmission start time point of the direct HARQ feedback information and the default transmission time duration.

It should be noted that the process of determining the first time by the access network device according to the start time point of the direct HARQ feedback information and the predetermined transmission time duration can be analogously referred to as the process of determining the first time through the first terminal, which will not be repeated.

In another possible implementation, as illustrated in Figure 5, the procedure includes, but is not limited to, the following blocks.

At block 501, the access network device sends the DCI to schedule transmission of the direct data to the first terminal. The DCI is configured to indicate a time point of completion of the transmission of the direct data.

The completion time point of transmission of the direct data is a time point at which the second terminal receives the direct data sent by the first terminal.

Optionally, the direct data transmission end time point is a direct data transmission end time point on the direct channel.

At block 502, the first terminal receives the DCI sent by the access network device and is configured to schedule transmission of the direct data.

The first terminal receives the DCI sent by the access network device and is configured to schedule the transmission of the direct data, and determines the end time point of the transmission of the direct data according to the DCI.

At block 503, the first terminal obtains a predetermined time interval between the transmission of the forward data and the transmission of the forward HARQ feedback information corresponding to the forward data.

Optionally, the default time interval is the time interval between the end time point of transmission of the direct data and the start time point of transmission of the corresponding forward HARQ feedback information.

The predetermined time interval may be determined statically or semi-statically such as a protocol definition or access network device configuration, or may be determined independently by the first terminal or the second terminal and reported to the access network device.

Optional, the default time range includes:

a second fixed constant; either

a time interval predefined by a communication protocol; either

a time interval preconfigured by the access network device.

Optional, the default time range includes:

a maximum time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data.

When the default time interval is the maximum time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data, the time for the terminal to report the time interval The default includes, but is not limited to, the following two possible implementations.

In a possible implementation, the first terminal itself reports the predetermined time interval to the access network device. That is, the first terminal reports the predetermined time interval to the access network device.

The default time interval is the default time interval between the transmission of the direct data and the transmission of the direct HARQ feedback information corresponding to the direct data.

In another possible implementation, the first terminal receives the downlink signaling sent by the access network device, and the downlink signaling is configured to instruct the predetermined time slot returned by the first terminal to the access network device. access. The first terminal feeds back the predetermined time slot to the access network device according to the downlink signaling, and accordingly, the access network device receives the predetermined time slot.

In block 504, the first terminal determines the first time point according to the completion time point of the transmission of the direct data and the predetermined time interval.

Optionally, the first time point is the time point of completion of the transmission of the direct HARQ feedback information on the PSFCH.

Optionally, the first terminal determines the first time point by adding the end time point of the transmission of the direct data and the predetermined time interval.

The access network device requires to perform the same timing determination as the first terminal, that is, the access network device sends the DCI to schedule the transmission of the direct data to the first terminal, and the DCI is configured to indicate the end time point of the transmission of the direct data. And then the access network device obtains the predetermined time interval between the transmission of the forward data and the transmission of the forward<h>A<r>Q feedback information corresponding to the forward data, and determines the first point of time according to the end time point of the direct data transmission and the predetermined time interval.

It should be noted that the process of determining the first time by the access network device according to the end time point of the direct data and the predetermined time interval can be analogously referred to as the process of determining the first time by the first terminal according to the end time point of direct data and the default time interval, which will not be repeated again.

In an illustrative example, as illustrated in Figure 6, the first terminal receives the DCI sent by the access network device and to schedule the transmission of the direct data. The DCI is configured to indicate the completion time point of the T1 transmission of the direct data. The first terminal performs direct data transmission to the second terminal according to the programming of the access network device, and receives the direct HARQ feedback information transmitted by the second terminal through the PSFCH. The first terminal obtains the predetermined time slot C0 predefined by the communication protocol, and determines the first time point T0 according to the sum of the transmission completion time T1 of the direct data and the predetermined time slot C0. After determining that the first time point is T0 = "T1 C0" and the default processing time duration is D0, the first terminal executes that when it requires to send the direct HARQ feedback information and the uplink information whose point of transmission start time is later than T0 D0 both within the target time unit, the first terminal sends the direct HARQ feedback information and the uplink information to the access network device on the same uplink channel of the physical layer within the target time unit.

In another illustrative example, as illustrated in Figure 7, the first terminal receives the DCI sent by the access network device and to schedule the transmission of the direct data. The DCI is configured to indicate the completion time point of the T1 transmission of the direct data. The first terminal performs direct data transmission to the second terminal according to the programming of the access network device, and receives the direct HARQ feedback information transmitted by the second terminal through the PSFCH. The first terminal obtains the predetermined time slot C1 determined by itself, and determines the first time point T0 according to the sum of the transmission completion time T1 of the direct data and the predetermined time slot C1. After determining that the first time point is T0 = "T1 C1" and the default processing time duration is D0, the first terminal executes that when it requires to send the direct HARQ feedback information and the uplink information whose point of transmission start time is later than T0 D0 both within the target time unit, the first terminal sends the direct HARQ feedback information and the uplink information to the access network device on the same uplink channel of the physical layer within the target time unit.

In summary, in the embodiment of the present disclosure, the first terminal determines the first time point, and when the direct HARQ feedback information and the uplink information must be sent within the target time unit, the first time point is earlier than the transmission start time point of the uplink information and an absolute value of a difference between the transmission end time point and the transmission start time point is greater than the transmission time duration. By default processing, the first terminal sends the direct HARQ feedback information and uplink information to the access network device on the same uplink channel of the physical layer within the target time unit. Therefore, a situation is avoided where when some uplink information starts to be transmitted on the uplink channel, the direct HARQ feedback information is generated and causes the first terminal to be unable to multiplex or exit the transmission process. existing to perform multiplexing again, which simplifies the complexity of the chips, and also ensures that the first terminal can process the uplink multiplexing transmission timely.

The following are embodiments of apparatus of the present disclosure, which may be configured to execute embodiments of procedures of the present disclosure. For details not disclosed in the apparatus embodiments of the present disclosure, please refer to the method embodiments of the present disclosure.

Figure 8 is a block diagram illustrating a data transmission apparatus for direct communication according to an illustrative embodiment. The apparatus has the function of implementing the above-mentioned examples of the procedures for the first side of the terminal, and the function may be realized by hardware or by executing software by the hardware. The apparatus 800 may include a receiving module 810, a progress module 820, and a sending module 830.

The sending module 830 is configured so that, when the direct HARQ feedback information and the uplink information are sent within a target time unit, and the direct HARQ feedback information and the uplink information satisfy a ratio of predetermined timing, send the direct HARQ feedback information and the uplink information to an access network device on the same uplink channel of the physical layer within the target time unit.

The forward HARQ feedback information is configured to indicate a receiving state corresponding to forward data, and the forward data is physical layer data sent by the first terminal to a second terminal through a forward link.

Optionally, the uplink information includes at least one of SR scheduling request, ACK/NACK feedback response information, CSI channel status information, CQI channel quality indicator and uplink service data.

According to the invention, the predetermined timing relationship includes:

a first time point is earlier than a second time point, and an absolute value of a difference between the first time point and the second time point is greater than a predetermined processing time duration.

The first time point is a completion time point of transmission of direct HARQ feedback information on a PSFCH direct feedback channel, and the second time point is a start time point of transmission of link information. upstream on the physical layer uplink channel.

Optionally, the default processing time duration includes:

a first fixed constant; either

a duration of time predefined by a communication protocol; either

a duration of time preconfigured by the access network device.

Optionally, the receiver module 810 is configured to receive DCI sent by the access network device and configured to schedule transmission of the direct data. The DCI is configured to indicate a start time point of transmission of the direct HARQ feedback information, and the start time point of transmission of the direct HARQ feedback information is a time point at which the second terminal begins to send the direct HARQ feedback information to the first terminal; and

The progress module 820 is configured to obtain a predetermined transmission time duration of the direct HARQ feedback information, and determine the first time point according to the transmission start time point of the direct HARQ feedback information and the default transmission time duration.

Optionally, the receiver module 810 is configured to receive DCI sent by the access network device and configured to schedule transmission of the direct data. The DCI is configured to indicate a direct data transmission completion time point, and the direct data transmission completion time point is a time point at which the second terminal receives the sent direct data. through the first terminal.

The progress module 820 is configured to obtain a predetermined time interval between the transmission of the direct data and the transmission of the direct HARQ feedback information corresponding to the direct data, and determine the first time point according to the point of direct data transmission completion time and the default time interval.

Optionally, the default time range includes:

a second fixed constant; either

a time interval predefined by a communication protocol; either

a time interval preconfigured by the access network device.

Optionally, the default time range includes:

a maximum time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data.

Optionally, the device also includes:

the sending module 830 is further configured to report, by the first terminal, the predetermined time interval to the access network device; either

receiving, by the first terminal, the downlink signaling sent by the access network device, and feedback the predetermined time slot to the access network device according to the downlink signaling.

In summary, in embodiments of the present disclosure, when the direct HARQ feedback information and the uplink information are to be sent within the target time unit, the direct HARQ feedback information and the uplink information at least satisfy the predetermined timing ratio to ensure that the first terminal is able to process the uplink multiplexing transmission timely, that is, the first terminal can use the same physical layer uplink channel within the target time unit to inform. Therefore, the problem of resource conflicts caused by the overlap of direct HARQ feedback and other time domain uplink data transmissions in related technologies, a success rate of receiving and sending information in a Direct communication scenario is fully guaranteed, and it is beneficial to improve the efficiency of data transmission.

Figure 9 is a block diagram illustrating a data transmission apparatus for direct communication according to another illustrative embodiment. The apparatus has the function of implementing the above-mentioned examples of the procedures for the access network device side, and the function may be realized by hardware or by executing software by the hardware. The apparatus 900 may include a receiving module 910, a progress module 920, and a sending module 930.

The receiving module 910 is configured to receive the direct HARQ feedback information and the uplink information sent by the first terminal within a target time unit, and the direct HARQ feedback information and the uplink information satisfy a ratio of predetermined timing, receive the direct HARQ feedback information and the uplink information sent by the first terminal on the same uplink channel of the physical layer within the target time unit.

The forward HARQ feedback information is configured to indicate a receiving state corresponding to forward data, and the forward data is physical layer data sent by the first terminal to a second terminal through a forward link.

Optionally, the uplink information includes at least one of SR scheduling request, ACK/NACK feedback response information, CSI channel status information, CQI channel quality indicator and uplink service data.

According to the invention, the predetermined timing relationship includes:

a first time point is earlier than a second time point, and an absolute value of a difference between the first time point and the second time point is greater than a predetermined processing time duration.

The first time point is a completion time point of transmission of direct HARQ feedback information on a PSFCH direct feedback channel, and the second time point is a start time point of transmission of link information. upstream on the physical layer uplink channel.

Optionally, the default processing time duration includes:

a first fixed constant; either

a duration of time predefined by a communication protocol; either

a duration of time preconfigured by the access network device.

Optionally, the sending module 930 is configured to send DCI downlink control information to schedule transmission of the direct data to the first terminal. The DCI is configured to indicate a start time point of transmission of the direct HARQ feedback information, and the start time point of transmission of the direct HARQ feedback information is a time point at which the second terminal begins to send the direct HARQ feedback information to the first terminal.

The progress module 920 is configured to obtain a predetermined transmission time duration of the direct HARQ feedback information, and determine the first time point according to the transmission start time point of the direct HARQ feedback information and the default transmission time duration.

Optionally, the sending module 930 is configured to send DCI downlink control information to schedule transmission of the direct data to the first terminal. The DCI is configured to indicate a direct data transmission completion time point, and the direct data transmission completion time point is a time point at which the second terminal receives the sent direct data. through the first terminal.

The progress module 920 is configured to obtain a predetermined time interval between the transmission of the direct data and the transmission of the direct HARQ feedback information corresponding to the direct data, and determine the first time point according to the point of direct data transmission completion time and the default time interval.

Optionally, the default time range includes:

a second fixed constant; either

a time interval predefined by a communication protocol; either

a time interval preconfigured by the access network device.

Optionally, the default time range includes:

a maximum time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data.

Optionally, the receiving module 910 is further configured to receive the predetermined time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data; either

to send downlink signaling to the first terminal, the downlink signaling is configured to indicate the predetermined time slot returned by the first terminal to the access network device, and to receive the predetermined time slot returned by the first terminal.

It should be noted that, when the apparatus provided in the above embodiments performs its functions, the division of the functional modules mentioned above is used as an example for illustration. In actual applications, the functions mentioned above can be assigned to be completed by different functional modules according to actual requirements. That is, the content structure of the device is divided into different functional modules, to complete all or part of the functions described above.

With respect to the apparatus in the above embodiments, the specific way in which each module performs the operation has been described in detail in embodiments of the method and will not be detailed here.

The above mainly presents the solution provided by the embodiments of the present disclosure from the point of view of the interactions between the access network device, the first terminal and the second terminal. It can be understood that, to implement the above functions, the devices (including the access network device, the first terminal and the second terminal) include a hardware structure and/or a software module to implement each function. In combination with units and algorithm steps of the examples described in the embodiments described in the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of computer hardware and software. Whether a given function is executed by the hardware or by a mode of computer software that controls the hardware depends on the specific applications and the design constraint conditions of the technical solution. Those skilled in the art may use different procedures for each specific application to implement the described functions, but such implementation should not be considered to go beyond the scope of the technical solution of the embodiments of the present disclosure.

Figure 10 is a block diagram illustrating a terminal 1000 according to an example embodiment. For example, a terminal 1300 may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, medical equipment, fitness equipment, a personal digital assistant, etc

As illustrated in Figure 10, the terminal 1000 may include one or more components: a processing component 1002, a memory 1004, a power supply component 1006, a multimedia component 1008, an audio component 1010, a input/output (I/O) 1013, a sensor component 1014 and a communication component 1016.

The processing component 1002 generally controls all operation of the terminal 1000, such as operations related to display, telephone call, data communication, camera operation and recording operation. The processing component 1002 may include one or more processors 1020 for executing instructions to carry out all or part of the blocks of the above procedures. Additionally, the processing component 1002 may include one or more modules to facilitate interaction between the processing component 1002 and other components. For example, the processing component 1002 may include a multimedia module to facilitate interaction between the multimedia component 1008 and the processing component 1002.

Memory 1004 is configured to store all types of data to support the operation of the terminal 1000. Examples of data include instructions for any application or procedure operated on the terminal 1000, contact data, phone book data, messages, images , videos, etc. The memory 1004 may be implemented by any type of volatile or non-volatile memory devices, or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), a read-only memory erasable programmable memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, or a magnetic or optical disk.

The power supply component 1006 may provide power supply for all components of the terminal 1000. The power supply component 1006 may include a power supply management system, one or more power supplies, and other components related to the generation, management and distribution of energy for terminal 1000.

The multimedia component 1008 includes an output interface screen provided between the terminal 1000 and the user. In some embodiments, the display may include a liquid crystal display (LCD) and a touch panel (TP). If the display includes the touch panel, the display may be implemented as a touch screen to receive input signals from the user. The touchpad includes one or more touch sensors to detect touches, swipes, and other gestures on the touchpad. The touch sensor can not only detect the limit of the tapping or swiping action, but also detect the duration and pressure related to the tapping or swiping operation. In some embodiments, the multimedia component 1008 includes a front camera and/or a rear camera. When the camera 1000 is in an operation mode, such as a photo mode or a video mode, the front camera or the rear camera may receive the external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or an optical lens system capable of optical focus and zoom.

The audio component 1010 is configured as an output and/or input signal. For example, the audio component 1010 includes a microphone (MIC). When the terminal 1000 is in operation mode, such as call mode, recording mode and voice recognition mode, the microphone is configured to receive external audio signals. The received audio signals may further be stored in memory 1004 or sent through communication component 1016. In some embodiments, audio component 1010 further includes a speaker for an output audio signal.

The I/O interface 1013 provides an interface for the processing component 1002 and the peripheral interface modules, in which the peripheral interface module may be a keyboard, a click wheel, buttons, etc. The buttons may include, but are not limited to, a home button, a volume button, a home button, and a lock button.

The sensor component 1014 includes one or more sensors configured to provide various aspects of the evaluation state of the terminal 1000. For example, the sensor component 1014 may detect the on/off state of the terminal 1000 and the relative positioning of the component. For example, the component is a display and keyboard of the terminal 1000. The sensor component 1014 may further detect the change in location of the terminal 1000 or a component of the terminal 1000, the presence or absence of contact between the user and the terminal 1000, the orientation or acceleration/deceleration of the terminal 1000, and the change in temperature of the terminal 1000. The sensor component 1014 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 1014 may further include a light sensor, such as a CMOS or CCD image sensor, which is configured for use in imaging applications. In some embodiments, the sensor component 1014 may further include an accelerometer, a transducer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1016 is configured to facilitate communication, wired or wireless, between the terminal 1000 and other devices. The terminal 1000 may access a wireless network based on a communications standard, such as WiFi, 2G, or 3G, or combinations thereof. In an illustrative embodiment, the communication component 1016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an illustrative embodiment, the communication component 1016 further includes a near field communication (NFC) module to facilitate short range communications.

In an illustrative embodiment, the terminal 1000 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), arrays. field programmable gates (FPGA), controllers, microcontrollers, microprocessors or other electronic components, which are configured to perform the above procedure.

In an illustrative embodiment, a non-temporary computer-readable storage medium that includes instructions is further provided, such as the memory 1004 that includes instructions, in which the instructions can be executed by the processor 1020 of the terminal 1000 to complete the above procedures. . For example, the non-temporary computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

A non-temporary computer readable storage medium is provided. When the instruction on the non-temporary computer-readable storage medium is executed by the processor of the first terminal so that the first terminal can execute the above data transmission procedure.

Figure 11 is a block diagram illustrating an access network device 1100 according to an illustrative embodiment.

The access network device 1100 may include: a processor 1101, a receiver 1102, a transmitter 1103 and a memory 1104. The receiver 1102, the transmitter 1103 and the memory 1104 are respectively connected to the processor 1101 via a bus.

The processor 1101 includes one or more processing cores and executes programs and software modules to execute the procedures executed by the access network device in the transmission configuration procedure provided in embodiments of the present disclosure. Memory 1104 may be configured to store software programs and modules. In detail, the memory 1104 may store an operating system 11041 and an application program module 11042 required by at least one function. The receiver 1102 is configured to receive communication data sent by other devices, and the transmitter 1103 is configured to send communication data to other devices.

An illustrative embodiment of the present disclosure also provides a data transmission system for direct communication, including a terminal and an access network device.

The terminal is implemented by the data transmission apparatus for direct communication provided in the embodiment as illustrated in Figure 8.

The access network device is implemented by the data transmission apparatus for direct communication provided in the embodiment as illustrated in Figure 9.

An illustrative embodiment of the present disclosure also provides a data transmission system for direct communication, including a terminal and an access network device.

The terminal is implemented by the terminal provided in the embodiment as illustrated in Figure 10.

The access network device is implemented by the access network terminal provided in the embodiment as illustrated in Figure 11.

An illustrative embodiment of the present disclosure also provides a computer-readable storage medium with at least one instruction, at least one program, a code set, or an instruction set stored thereon. The at least one instruction, the at least one program, the code set or the instruction set is loaded or executed by a processor to implement steps executed by the first terminal or the access network device in the data transmission procedure for direct communication provided by the respective procedure embodiments above.

After considering the specification and practicing the disclosure in the present description, those skilled in the art will readily think of other embodiments of the present application. This application is intended to cover any variation, use or adaptive change of this application. These variations, uses or adaptive changes follow the general principles of the present application and include common knowledge or conventional technical means in the technical field not disclosed by the present application. The description and embodiments are to be considered by way of example only, and the true scope of the present application relates to the appended claims.

It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes may be made without departing from its scope. The scope of the present application is limited only by the attached claims.

Claims (11)

1. A data transmission procedure for direct communication, comprising: when the direct hybrid automatic repeat request HARQ feedback information and the uplink information must be sent within a target time unit, and the direct HARQ feedback information and the uplink information satisfy a predetermined timing relationship, send (205), by a first terminal, the direct HARQ feedback information and uplink information to an access network device on the same uplink channel of the physical layer within the target time unit, in which the target time unit is a time unit when the first terminal requires to send the uplink information and the direct HARQ feedback information; wherein, the forward HARQ feedback information is configured to indicate a receiving state corresponding to forward data, and the forward data is physical layer data sent by the first terminal to a second terminal through a forward link; wherein the predetermined timing relationship comprises: a first time point is earlier than a second time point, and an absolute value of a difference between the first time point and the second time point is greater than a predetermined processing time duration; wherein, the first time point is a completion time point of transmission of the direct HARQ feedback information on a PSFCH direct feedback channel, and the second time point is a start time point of transmission of the uplink information in the uplink channel of the physical layer. 2. The method according to claim 1, wherein the uplink information comprises at least one of SR scheduling request, ACK/NACK feedback response information, CSI channel status information, channel quality indicator CQI and uplink service data. 3. The method according to claim 1, wherein the predetermined processing time duration comprises: a first fixed constant; either a duration of time predefined by a communication protocol; either, a duration of time preconfigured by the access network device; either the procedure that also includes: receiving (402) downlink control information DCI sent by the access network device and configured to schedule the transmission of the direct data, wherein the DCI is configured to indicate a start time point of transmission of the information of direct HARQ feedback, and the start time point of transmission of the direct HARQ feedback information is a time point at which the second terminal begins to send the direct HARQ feedback information to the first terminal; obtain (403) a predetermined transmission time duration of the direct HARQ feedback information; and determining (404) the first time point according to the transmission start time point of the direct HARQ feedback information and the predetermined transmission time duration; either the procedure that also includes: receiving (502) downlink control information DCI sent by the access network device and configured to schedule the transmission of the direct data, wherein the DCI is configured to indicate a time point of completion of the transmission of the direct data, and the completion time point of transmission of the direct data is a time point at which the second terminal receives the direct data sent by the first terminal; obtaining (503) a predetermined time interval between the transmission of the direct data and the transmission of the direct HARQ feedback information corresponding to the direct data; and determining (504) the first time point according to the end time point of the transmission of the direct data and the predetermined time interval. 4. The method according to claim 3, wherein the predetermined time interval comprises: a second fixed constant; either a time interval predefined by a communication protocol; either a time interval preconfigured by the access network device; wherein the predetermined time interval comprises: a maximum time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data; or the procedure that also includes: informing, by the first terminal, the predetermined time interval to the access network device; either receiving, by the first terminal, the downlink signaling sent by the access network device, and forwarding the predetermined time slot to the access network device according to the downlink signaling. 5. A data transmission procedure for direct communication, comprising: when the direct hybrid automatic repeat request HARQ feedback information and the uplink information sent by the first terminal are received within a target time unit, and the direct HARQ feedback information and the uplink information satisfy a relationship of predetermined timing, receiving by an access network device, the direct HARQ feedback information and the uplink information sent by the first terminal on the same uplink channel of the physical layer within the target time unit, in wherein the target time unit is a time unit when the first terminal requires to send the uplink information and the direct HARQ feedback information; wherein, the forward HARQ feedback information is configured to indicate a receiving state corresponding to forward data, and the forward data is physical layer data sent by the first terminal to a second terminal through a forward link; wherein the predetermined timing relationship comprises: a first time point is earlier than a second time point, and an absolute value of a difference between the first time point and the second time point is greater than a predetermined processing time duration; wherein, the first time point is a completion time point of transmission of the direct HARQ feedback information on a PSFCH direct feedback channel, and the second time point is a start time point of transmission of the uplink information in the uplink channel of the physical layer. 6. The method according to claim 5, wherein the uplink information comprises at least one of SR scheduling request, ACK/NACK feedback response information, CSI channel status information, channel quality indicator CQI and uplink service data. 7. The method according to claim 5, wherein the predetermined processing time duration comprises: a first fixed constant; either a duration of time predefined by a communication protocol; either, a duration of time preconfigured by the access network device; either the procedure that also includes: sending downlink control information DCI to schedule transmission of the direct data to the first terminal, wherein the DCI is configured to indicate a start time point of transmission of the direct HARQ feedback information, and the time point start of transmission of the direct HARQ feedback information is a time point at which the second terminal begins to send the direct HARQ feedback information to the first terminal; obtain a predetermined transmission time duration of the direct HARQ feedback information; and determining the first time point according to the transmission start time point of the direct HARQ feedback information and the predetermined transmission time duration; either the procedure that also includes: sending, by the access network device, downlink control information DCI to schedule the transmission of the direct data to the first terminal, wherein the DCI is configured to indicate a time point of completion of the transmission of the data direct data, and the completion time point of transmission of the direct data is a time point at which the second terminal receives the direct data sent by the first terminal; obtaining a predetermined time interval between the transmission of the direct data and the transmission of the direct HARQ feedback information corresponding to the direct data; and determining the first time point according to the end time point of the transmission of the direct data and the predetermined time interval. 8. The method according to claim 7, wherein the predetermined time interval comprises: a second fixed constant; either a time interval predefined by a communication protocol; either a time interval preconfigured by the access network device; either wherein the predetermined time interval comprises: a maximum time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data; or the procedure that also includes: receiving the predetermined time interval between the transmission of direct data reported by the first terminal and the transmission of the direct HARQ feedback information corresponding to the direct data; either sending downlink signaling to the first terminal, the downlink signaling is configured to indicate the predetermined time slot returned by the first terminal to the access network device, and receive the predetermined time slot returned by the first terminal. 9. A terminal, which includes: a processor; a transceiver coupled to the processor; a memory configured to store instructions executable by the processor; wherein the processor is configured to load and execute the executable instructions to implement the data transmission method for direct communication according to any one of claims 1 to 4. 10. An access network device comprising: a processor; a transceiver coupled to the processor; a memory configured to store instructions executable by the processor; wherein the processor is configured to load and execute the executable instructions to implement the data transmission method for direct communication according to any one of claims 5 to 8. 11. A computer-readable storage medium with at least one instruction, at least one program, a set of codes or a set of instructions stored therein, wherein at least one instruction, at least one program, the set of Codes or the set of instructions are loaded or executed by a processor to implement the data transmission method for direct communication according to any one of claims 1 to 8.